Rim tool



P. B. BASTARACHE;

RIM TOOL.

FILED NOV. I2, 1921.

Mar. 27,1923. 1,449,806;

Fi 1. j

2" E m f 5 H5 l PETE}? B. BASTARACHE /-.v TOR ATTORNE] Patented Mar.27,. 1923.

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PETER B. BASTARACHE, 015 BEVERLY, MASSACHUSETTS.

RIM TOOL.

Application filed November 12, 1921.

T 0 all whom it may concern:

. Be it known that I, PETER B. Bss'rnnncnn, a citizen of the UnitedStates, residing at Beverly in the county of Essex and Commonwealth ofMassachusetts, have invented certain new and useful Improvements in RimTools, of which the following is such a full, clear, andexactdescription as will enable others versed in the art to which itappertains to make and use the same.

My invention relates to tools or equipment for the better, easier, andmore eflicienthandling, contracting, and expanding of so calleddemountable rims during the process of mounting and demounting thereonthe shoe portions of pneumatic tires.

The objects of my invention are:

To provide novel and improved means of mounting and demounting pneumatictires upon so called demountable rims of the type having two abuttingends.

To provide a new and improved quick gripping method for use incontracting said rims.

To provide a new and improved means of adjustment, making my deviceefiiciently applicable for use on rims of considerably varying sizes.

To increase the efficiency of mounting and demounting devices by directapplication of force between opposite sides of said rim, at multiplepoints,eliminating so called hub or center portions and their incidentaltroubles.

To eliminate center binding and bulging of said mounting and demountingdevices.

To provide a novel construction and arrangement of parts herein fullydescribed and indicated in my appended claims.

I accomplish the objects of my invention as shown in the accompanyingdrawings in which Figure 1 is a side view of my mounting and demountingdevice in working position within an ordinary demountable rim. Figure 2is a sectional view on the line as in Figure 1. Figure 3 shows thedetail of my rim engaging unit.

Referring to the drawing, 5 shows the demountable rim within which mydevice is positioned. The diametrical force applying means comprisingtwo arms 6, arranged at right-angles to each other and joined at 7adjacent their inner ends by the connecting screw 8, and each having atone end a rim engaging unit 9 and at its other end having ascrew-threaded stem 12*, another rim en- Serial No. 514,542.

gaging unit 9 having a screw-threaded stem 13 and a solid turn-buckle 11connecting the two stems 12 and 13 The diametrical arms 6 are providedwith auxiliary'threaded orifices 10 in which the connecting screw 8interchangeably fits when it is desired to utilize my device on adifferent sized rim than here shown.

The turn buckle 11 is constructed with a right and left thread, 12 and13 respectively, within opposite ends of said turn buckle 11, whichthreads tit and operate on the stems, 12 and 13 The arms 6 are slightlybent at their center portion so as to allow clearance for each other inuse.

In Figure 3', 14 shows the flat portion of the rim-engaging unit whichengages and rests against the inner surface of a demountable rim when mydevice is' used in expanding said rim. 15 shows the hook formed toengage a demountable rim when my device is used in contracting said rim,as in removing a tire shoe therefrom. The tire gripping units are bestpositioned on opposite ends of the diametral arms 6 so as to grip, oneon the right and one on the left of the demountable rim.

Those familiar with the art will understand that my device is operated,expanded, or contracted at will b turning the buckle 11, the. right andleft threads of which expand or contract the arms '6 longitudinally.

WVhen intended for use within a rim smaller than shown in the drawingthe connecting screw 8 is removed and the arms 6 reunited at thethreaded orifices 10 into which the connecting screw 8 interchange- Theuse of the improved turn buckle 11 adds much rigidity to the diametricalarms 6 by increasing the area of the inner supporting surface whichbears on the threads 12 and 13 This construction avoids'much of theloose play incidental to open center turn buckles, and resultinglyreduces the tendency of my device to double up or buckle when force isapplied in expanding the rims, within which the device is used. Theelimination of all working parts at the hub portion is also a majorfactor in this result. Vhen the tool is in position within a rim, thearms 6 on the opposite side of the screw 8 from the stems 12 togetherwith the portion of the rim extending between the outer ends of saidarms, form a substantially rigid triangular frame which is not affectedby the operation of the adjusting means and each adjusting means isoperable separate from the other, etc.

I do not desire to confine myself to the herein specifically definedconstruction, as future practice may require such changes as may wellfall within the scope of my invention as defined in my appended claims.

Having thus described my invention I claim as new and desire to secureby Letters Patent of the United States of America 1. A rim tool forexpanding and contracting Wheel-rims, comprising a pair of rigid armshaving rim engaging hooks at their outer ends and joined togetheradjacent their inner enos and arranged substantially at right-angles toeach other, and each arm being also provided with a threaded stemprojecting in alined extension with its respective arm, and a rim-endadjusting means mounted on each of said stems and having a rim-engaginghook at the outer ends thereof.

2. A rim tool for expanding and contracting wheel-rims, comprising apair of arms having rim engaging hooks at their outer ends and joinedtogether adjacent their inner ends and arranged substantially atright-angles to each other, and each arm being also provided with athreaded stem projecting in alined extension with its respective arm,and a rim-end adjusting means on each of said stems and embodying aturnbuckle, a second threaded stem having a rimengaging hook on itsouter end.

3. A rim-tool for expanding and contracting wheel-rims, comprising apair of rigid arms having rim-engaging hooks at their outer ends, andprovided with a series of apertures adjacent their inner ends, and abolt joining said arms together and adapted to be interchangeablyengaged in said apertures to vary the span of the tool, said arms beingarranged substantially at right-angles to each other and also providedwith threaded stems, and adjusting means on said stems having hooks toengage the rim.

In testimony whereof I afiix my signature in the presence of twowitnesses.

PETER l3. BASTARACHE. lVitnesses CHARLES W. Lovn'r'r, A. GERTRUDEJOHNSON.

